Toy torpedo



May 22, 1928.

K. KOHN TOY TORPEDO v Original Filed July 14, 1926 w 6 a M atfozmma v Patented May 22, 1928.

Kent: norm, on New YonK, N. Y.

* TOY TORPEDO,

This invention relates to toy torpedoes and more particularly to' a form of toy torpedo rendered safe by having no freely movable detonating elements.

Thegeneral object of the present lnvention-is to providea novel and improved safety form of toy torpedo.

" More particularly it is an object of the invention to render the present type of toy torpedo-safe and prevent premature explosion of the same by fixing the gravel orother detonating elements to one or more Walls of the explosive container.

A further object of the present inventlon consists inthe provision, in a toy torpedo, of anexplosive compound, a plurality of granular detonating elements and an enclosing gastight casing, all of the detonating, elements being lightly secured to one or more interior 'Wallsof the casing, so that they can. be only separated therefrom upon impact of the torpedo against a hard surface.

A still further object of-the present invene tion consists in theprov'ision'of a novel and improved method of securing gravel or other.

detonating means in a toy torpedo to the walls of the explosive container.- 7 Other and further objects of the invention will be more apparent, to those skilled in the art, by reference to the accompanying drawing and following specification, wherein 1s disclosed a single exemplary embodiment of the invention, it being understood,however, that various changes may be made therein without departing from the spirit of the invention or the scope of the-appended claims.

In said drawing: Figure l is a perspective view of a completed torpedo constructed according to the present invention; ,Figure 2 isa vertical central section of the container before the gravel is applied; and

Figure 3 is a verticalcentral section of the completed torpedo.

The present and most popular types of toy torpedoesare either of tubular or globular construction. In either type it is customary to have a container .in which are placed an explosive composition, and detonating or abrasive means-for setting off the explosive.

The latter is usually gravel, or similar material, which is placed together with the explosive within the container, which is sealed Application filed July 14;, 1926, Serial No. 122,466. Renewed April. 11, 1928.

to make it gastight. The container may or may not be provided with suitable reinforc ing means placed about its exterior to increase its bursting resistance and hence the intensity of'the report when the explosive is detonated by impacting a hard surface. The gravel and explosive do not tightlyflfill the container and can move about freely, so that it frequently hap pens that suflicient percussion or impact between'the' gravel particles and the explosiveis causedbyslightjars incident to shipping and storing the torpedoes to cause the explosion of one of the torpedoes. This explosion may be immediately transmitted to adjacent torpedoes so that a whole case and even a whole carload may be exploded simultaneously, resulting in great property dainage and physical injury to those near by. The present invention contemplates-securing the gravel in position against accidental movement until the torpedo is subject to intentional impact. 4

the torpedo against .Referring to the drawing, thereis shown I for decorative purposes or to increase its "resistance to burst-ing, and s sometimes rolledin a. mixture of-an agglutinant and some material such as. wood-flour to cause a it to assume a spherical shape, the latter operation, however, taking place after the charge has been placed and sealed within the tube. I v

The-inner wall of the tube is lined with a suitable adhesive or mastic for a purpose I to be later described. This material is applied in a thin layer-around the inner wall of thetube, as shownat 11 in Figs. 2 and 3. After this adhesive or mastic has been applied to the wall ofthe tube,-a suitable closure 12 is applied to the bottom of the tube, It may consist of a cardboard diskor. the

like pressed inside the open. end of the tube and maybe secured by a suitable adhesive. or by that alreadywithinthe tube.

It is preferred to use pitch or a similar mastic materialfor the coating 11... This material is applied in a hot state to the inner walls of the tube. In actual manufacture a plurality of the tubes in the condition shown 1 If sufficient pitch isused there may be a second or inner layer of gravel adhering to. the pitchv which squeezes'between'the granin Fig. 2 are grouped ,in traysto .receiv gravel or other detonating means. 1 Gravel is the most common material, but it istobe.

understood that-the word flgravel? hereinafterused refers to any suitable detonatin'g" or abrading medium. The gravel is heated to a temperature sufiiciently high to cause'it 'to melt the pitch audit is-poured gint-ogthe; tubes until they are filled. It melts the pitch and anumber of particles or granules adhere to the ,pitch, asshown-a-t13in Fig. 3. 'When thegraveland pitch have cooled sufliciently,

the tubes are inverted and the gra'vel'w'hich perature given to the gravelwhen it isfilled into the cups so that it sinks'but little into the pitch. The pitch-mastic is oat sucha composition-that it is :relatively brittle, so

that upon considerable impact tlie gra-vel-will be shaken or broken loose and the. particles will come together with consider-able force.

ules of the first layer. 1 This layer reduces the diameter of the bore of the tube andallows the gravel granules to come together more readily when the torpedo isii mpacted.

The tubeswith the gravel-secured to the walls are next filled with a suitable explosive composition 14, suchv as chlorate of potassium, ant-imonyand sulfur. i After a sufficient quantity oi explosive has been placed in the containers, they areeach provided with asealing closure or cap 15 secured in position in any suitable manner.

In case it is desirable to 'use an adhesive insteadofthe mastic pitch, some such quick drying adhesive as shellac,"co1lodion or the like maybe applied to the interior of the cup or container and the, gravelimmediately placed therein. ;l his,-in contacting with the and after the adhesive has set, the looser-sue plus gravel is shakenfrom the. container;- It will be seen that by applying the mastic or adhesive to the proper thickness on the walls of the tube and by having it ofth'e proper consistency, the gravel can be adequately're tained in position againstaccidental disloose so that'the granules thereo'fma-y contact with each other and cause the explosive compound to be detonated'wlien the torpedo is thrown suflic-iently-hard against a solid surface. 7

Having thus described the invention, what coating.

to sa-id'inn'er wall.

, signature,

by lLette'rs :Patentsis: I a i l. Ina toy torpedo, in combination, a gas tight container, an explosive composition within said "container, an adhesive coating .onran interior walleof said container, an

e the is claimed asnew and desired to scoured l r abrasive material secured to said wall by said 2. In a toy torpedo, combinatioma gastight container of tenacious'matemal, anaerplosive "composition within-said container,

and .a plurality of percussionzelements lights;

ly secured to an interior wall (jftSfl-idCOIP tainery L,

3. In atoy tor- 1. do of :the type adapted tobe exploded by impact, in combination, an explosive composition, granular pero'ussion material, a/gastight container complete? ly enclosing said explosive compositionand percussion material, and means weakly )securing all oi said percussive material tov the interior wall of :said container.

.4. The method of making a-toy torpedo comprising forming a 'coi'itainer having opening through ea'wall (thereof, applying a mastic to an inner, wall of-the container, liliing the container with granular material,

pouring out the gra-nuilar material n'otnd' he-ring to saidmastic, filling explosive mates. rial in said container and sealing said open ing. I e 5. As a new articleof maufacture, a con tainer for'explosive vfor a toy-torpedo having gravel weakly adherent to an inner wall thereof.

6. As anew article of posed of tenacious material and having percussion means secured to wall thereof. v

7-. Asa new article'of manu facturepaitube forming part of a 'gasti ght enclosure forexmanufacture, a con tamer for explosive for a toy torpedocomr pl'osive for a toy torpedo, saidtube having 1 elements lightly secured to the inner wall adapted to break loose and impact with each having a coating of mastic on-its innerfwa-ll and granular abrasive material :;adhering to said mastic. v

9. Ina toy torpedo, in combination, a card- 7 board tube, closures for the ends thereof placement and yet can be readily broken forming a compartment, an explosive in said 2106 other to detonate explosive material in sa-itl container when the torpedo is inipacted' adhesive, will adhere to the walls of the tube, 1

wall of saidtube, and coarse gravel. adhering In testimony whereof KOBY cons. I 

